PMW3901 Optical Flow Sensor Module

The PMW3901 Optical Flow Sensor Module is a high-performance motion-tracking sensor designed to measure precise XY translation without the need for GPS or external positioning systems. It works by capturing and analyzing changes in surface texture beneath it, allowing microcontrollers and flight controllers to determine movement, speed, and direction with impressive accuracy.

Compact, lightweight, and efficient, this sensor is widely used in drones, robotics, autonomous vehicles, mobile platforms, and stabilization systems where reliable indoor navigation is crucial. With a fast response rate and stable performance under various lighting conditions, the PMW3901 delivers smooth optical flow data even during rapid motion.

This module integrates seamlessly with controllers like Arduino, ESP32, Raspberry Pi, STM32, and Pixhawk/ArduPilot, making it an excellent choice for hobbyists, developers, and engineers building advanced navigation solutions.

Key Features

• Accurate XY motion tracking using optical flow technology

• Stable performance in typical indoor lighting

• High-speed SPI communication for fast data output

• Compatible with Pixhawk, Arduino, ESP32, STM32 & more

• Compact, lightweight design suitable for drones and robotics

• Ideal for stabilisation, position hold, and indoor navigation

Typical Applications

• Drones (alt-hold, position-hold, precision landing)

• Robotics & AGVs

• Indoor navigation systems

• Gesture and motion sensing

• DIY autonomous vehicles